Each section, or "knol" will have "an author (or group of authors)," according to the Official Google Blog. "It's their knol, their voice, their opinion. We expect that there will be multiple knols on the same subject, and we think that is good." Knol authors can review, reject or modify any information that a newcomer wants to add to their section, and they can also earn revenue if they choose to display AdSense ads alongside their content.
The search giant first released news about the development of Google Knol in mid-December 2007. --Tameka Kee